7° DESCRIPTION OF PLATES. 



Plate XIII. 

 Adalia bijninctata {Family Coccinellidce). 



Fig. 193. Equatorial plate of spermatogonium, 20 chromosomes — 19 large, i small. 



194. First spermatocyte, spireme stage, x the heterochromosome group. 



195. First spermatocyte, metaphase. 



196. First spermatocyte, equatorial plate. 



197. Second spermatocyte, equatorial plates. 



Cicindela frimeriana (Family Cicindelidce). 



198. Equatorial plate of spermatogonium, 20 chromosomes — 19 large, i small, 

 igg. First spermatocyte, spireme stage, x the heterochromosome group. 



200. First spermatocyte, prophase. 



201 1 First spermatocyte, metaphase, x the unequal pair in tripartite form. 



202. First spermatocyte, showing metakinesis of the heterochromosomes (/ ands). 



203. First spermatocyte, equatorial plate. 



204. Second spermatocyte, equatorial plates. 



205. Giant spermatocyte, spireme stage, heterochromosome group double the 



usual size. 



206. Giant spermatocyte, prophase. 



ChlcEtiius cestivas (Family Carabidce). 



207. First spermatocyte, spireme stage, showing the unequal pair associated 



with a large plasmosome. 



208. First spermatocyte, metaphase. 



ZO9-210. First spermatocyte, beginning of metakinesis. 



211. First spermatocyte, equatorial plate, 17 chromosomes. 



212. First spermatocyte, anaphase, showing elongated centrosome and diver- 



ging univalent chromosomes. 



Chlcenius fennsylvanicus. 



213. First spermatocyte, spireme stage. 



214. First spermatocyte, equatorial plate, x the unequal bivalent. 



215. First spermatocyte, late prophase. 



Galerita bicolor (Family Carabidce). 



216. Equatorial plate of spermatogonium, 30 chromosomes — 29 large, i small. 



Anomoglossus emarginatus (Family CarabidcB). 



217. First spermatocyte, growth stage, x the odd chromosome. 



218. First spermatocyte, prophase. 



219-220. First spermatocytes, metaphase, x the odd chromosome. 



221. First spermatocyte, equatorial plate. 



222. First spermatocyte, daughter plates containing 18 and 19 chromosomes, 



respectively. 



223. Second spermatocytes, equatorial plates. 



Elater I {Family Elateridce, sjiecies not determined). 



224. Equatorial plate of spermatogonium, 19 chromosomes, x the odd one. 



225. First spermatocyte, spireme stage, x the odd chromosome. 



226. First spermatocyte, metaphase. 



227. First spermatocyte, prophase. 



228. First spermatocyte, equatorial plate. 



229. Equatorial plate from egg follicle, 20 chromosomes, x\ and x^ the pair 



corresponding to x in the spermatogonium. 



Elater II (Sfecies not determined). 



230. Equatorial plate of spermatogonium, 19 chromosomes, x the odd one. 



231. First spermatocyte, spireme stage. 



232. First spermatocyte, prophase. 



233. First spermatocyte, beginning of metakinesis. 



234. First spermatocyte, equatorial plate, x the odd chromosome. 



235. A pair of second spermatocytes in metaphase, two chromosomes connected, 



X the odd chromosome. 



Ellychniacorrusca (Family Lamfyridce). 



236. 'Equatorial plate of spermatogonium, 19 chromosomes. 



