XXXVI ILLUSTRATIONS. 



Page. 

 FIG. 268. Livoneca vulgaris (After Stimpson ) 259 



269. Livoneca vulgaris. a, Maxilliped of female, b, Seventh leg. c, Sec- 

 ond maxilla, d, First maxilla, e , Palp of mandible 259 



270. Livoneca vulgaris. Young male L'tiO 



271. Livoneca californica (After Schi<i>dte and Meinert). a, Adult fe- 

 male, b, Lateral view of thorax 2<>1 



272. Livoneca californica. a, Maxilliped. l>. Second maxilla. <; First 



maxilla, d, Palp of mandible 261 



273. Livoneca californica. Seventh leg 261 



274. Livoneca redmanni (After Schioedte and Meinert). a, Adult 

 female, b, Lateral view of thorax of same. <, Leg of seventh 

 pair of young female, d, Antenna of second pair of same. 

 e, Young female. /, Antenna of first pair of same, rj, Third leg 

 of same 262 



275. Livoneca redmanni. , Maxilliped of female, b, Second maxilla. 



c, Seventh leg. d, First maxilla, e, Palp of mandible 263 



276. Livoneca ovalis. Abdomen 264 



277. Livoneca ovalis. a, Maxilliped. b, Mandible, c, Second maxilla. 



d, First maxilla, e , Seventh leg 264 



278. Irona nana (After Schioedte and Meinert). a, Adult female, b, 



Young male, c, Young of the second stage, d, Tngula of the 



leg of the third pair of same 267 



279. Limnoria lignorum ( After Harger) 269 



280. Limnoria lignorum (After Harger). a, First antenna, b, Second 

 antenna, c, Maxilliped. d, Second maxilla, e, First maxilla. 



e, Distal end of first maxilla. /, Mandible 270 



281. Limnoria lignorum ( After Harger. ) a, Last segment of abdomen 



with uropoda. b, Uropod. c, First pair of pleopoda. d, Second 



pleopod of male 270 



282. Ancinus depressus. Abdomen with uropoda 272 



283. Cassidisca lunifrons 273 



284. Cassidisca lunifrons. Maxilliped 273 



285. Cassidisca ovalis. Abdomen with uropoda 274 



286. Tecticeps alascensis 276 



287. Tecticeps alascensis. , Antenna of first pair, b, Antenna of sec- 

 ond pair 276 



288. Tecticeps alascensis. a, Mandible, b, Mandibular appendage. 



c, Maxilliped 277 



289. Tecticeps alascensis. o, Leg of first pair, b, Last two joints of 

 same, c, Leg of second pair of male, d, Leg of third pair, e, 



Leg of sixth pair. /, Leg of seventh pair 277 



290. Tecticeps convexus. a, Head, b, Abdomen and last thoracic seg- 

 ment 279 



291. Tecticeps convexus. a, Maxilliped. b, Second leg of female, c, 



First leg. d, Mandible, e, Second maxilla. /, First maxilla. . . 279 



292. Spharoma quadridentatum ( After Harger) 281 



293. Sphseroma quadridentatum. a, Mandible, b. Frontal lamina and 



clypeus. c, Maxilliped 281 



294. Sphseroma destructor. Dorsal view 282 



295. Spheeroma destructor. Mandibular appendage 283 



296. Sphferoma destructor, a, Leg of second pair, b, Leg of fourth 



pair, c, Leg of fifth pair. d. Leg of sixth pair 283 



297. Sphseroma destructor. Abdomen with uropoda and last segment 



of thorax . 284 



