Species names should now use defines

code/modules/organs/organ.dm

@@ -52,7 +52,7 @@ var/list/organ_cache = list()
 	if(istype(holder))
 		src.owner = holder
 		src.w_class = max(src.w_class + mob_size_difference(holder.mob_size, MOB_MEDIUM), 1) //smaller mobs have smaller organs.
-		species = all_species["Human"]
+		species = all_species[SPECIES_HUMAN]
 		if(holder.dna)
 			dna = holder.dna.Clone()
 			species = all_species[dna.species]

code/modules/organs/organ_icon.dm

@@ -106,7 +106,7 @@ var/global/list/limb_icon_cache = list()
 	if(owner && owner.gender == MALE)
 		gender = "m"
 
-	icon_cache_key = "[icon_name]_[species ? species.name : "Human"]"
+	icon_cache_key = "[icon_name]_[species ? species.name : SPECIES_HUMAN]"
 
 	if(force_icon)
 		mob_icon = new /icon(force_icon, "[icon_name][gendered_icon ? "_[gender]" : ""]")
@@ -162,7 +162,7 @@ var/global/list/limb_icon_cache = list()
 
 	if(nonsolid)
 		applying.MapColors("#4D4D4D","#969696","#1C1C1C", "#000000")
-		if(species && species.get_bodytype(owner) != "Human")
+		if(species && species.get_bodytype(owner) != SPECIES_HUMAN)
 			applying.SetIntensity(1.5) // Unathi, Taj and Skrell have -very- dark base icons.
 		else
 			applying.SetIntensity(0.7)

code/modules/organs/robolimbs.dm

@@ -42,7 +42,7 @@ var/const/standard_monitor_styles = "blank=ipc_blank;\
 	var/lifelike										 // If set, appears organic.
 	var/skin_tone										 // If set, applies skin tone rather than part color
 	var/blood_color = "#030303"
-	var/list/species_cannot_use = list("Teshari")
+	var/list/species_cannot_use = list(SPECIES_TESHARI)
 	var/list/monitor_styles			 		 			 //If empty, the model of limbs offers a head compatible with monitors.
 	var/parts = BP_ALL						 			 //Defines what parts said brand can replace on a body.
 	var/health_hud_intensity = 1						 // Intensity modifier for the health GUI indicator.