290 On Ai^uatic Canticoivas Coleopteni or Dytiscidce. 



elytra, which however are so similar in the two that I am inclined to think them 

 one species. 



Xortli America ; Nebraska, Sept., 1874 ; (Iowa, Texas, Florida, Illinois, Canada, fide Crotch). 530. 



95. Laccophilus fusculus, n.sp. — Ovalis, minus latus et depressus, nitidus,testaceus, 

 elytris fere impunctatis, fusco-irroratis, maculls paucioribus minus distinctis ; vertice 

 capitis prothoracisque disco obscurioribus ; coxis posterioribus fuscis. Long. Si, 

 lat. 3 m.m. 



Though I have seen only a single female of this species I think it distinct ; it is 

 very much narrower than Laccophilus decipiens^ and appears intermediate between 

 it and L. atristernalis Crotch. 



North America ; Nevada. 531. 



9G. Laccophilus pictus. Cast. M.C. — Ovalis, latiusculus, minus depressus, sat 

 nitidus, rufo-testaceus, capite thoraceque testaceis, illo vertice, hoc basi in medio 

 nigris ; elytris fere impunctatis, nigris, maculis irregularibus nuraerosis testaceis. 

 Long. 5, lat. 3 m.m. 



In the male of this species the marks forming the coxal file are not quite so deep 

 and distinct as they are in Dytiscus maculosus (No. 92) : in the female the external 

 edge of the elytra is dilated at a little distance before the apex, but this is also 

 seen in some individuals of the same sex of Dytiscus maculosus. 



Mexico; Guatemala, (San Geronimo, Champion). 532. 



97. Laccophilus insignis, n.sp. — Ovalis, minus depressus, sat nitidus, rufo-testaceus, 

 capite thoraceque testaceis, illo vertice hoc basi in medio nigris ; elytris fere 

 impunctatis, nigris, fasciis duabus transversis maxime irregularibus, maculisque 

 versus apicem testaceis. Long. 5i, lat. 3i m.m. 



Closely allied to Laccophilus pictus, but larger and of more elongate form, and 

 with the yellow marks on the elytra more extensive, so that a very irregular basal 

 and a medial fascia is formed Ijy them. The tarsi of the male are thicker, and the 

 marks forming the coxal file in the same sex are coarser and more conspicuous. 



North America, Texas ; (Lower California fide Crotch). 533. 



98. Laccophilus fasciatus, Aubu, M.C. — Ovalis, depressiusculus, sat nitidus, 

 testaceus, elytris impunctatis, minus distiucte fusco-irroratis, maculis lateralibus et 

 apice testaceis, fascia lata ante apicem nigra ; prothorace basi in medio breviter 

 lobato ; pectore ssepe infuscato. Long, vix .5, lat. 21 m.m. 



