OCT., 1907. FRESH-WATER FISHES MEEK. 153 



the side under and above the pectorals. The examination of these 

 specimens rather strengthens the belief that this species is based on 

 males alone, the females being C. longimanus (Giinther). Mr. 

 Chaves says this fish does not come out in abundance till October. 

 Lake Managua (8), 200 to 260 mm. 



Neetroplus nematopus (Giinther). SHORT-FACED MOJARRA. 

 Lago de Guila (i), 88 mm. 



Family Gobiidse. 



Philypnus dormitor Lace"pede GUAVINA. 



These specimens were quite dark and much mottled. On the 

 larger specimens there is scarcely a trace of the lateral band; even 

 in the smallest it is indistinct. 



Lake Asososca (15), no to 230 mm.; Lago de Guila (7), 120 to 

 215 mm. 



The following is a list of fishes collected by the writer in Mexico, 

 at San Miguel de Allende, Guanajuato, Jesus Maria, San Luis Obisbo, 

 and Roderiquez Nuevo Leon, and by E. Heller and C. M. Barber at Sa- 

 binas, Coahuila. San Miguel is on a small stream which -flows over a 

 sandy bed into the Rio Lerma. There is a small stream at Jesus Maria 

 which belongs to the Rio Panuco system. It is almost without water 

 during the dry season. At the Hacienda a dam is built across the narrow 

 valley forming above it a small lake. In this 4 species of fishes were 

 taken two of which, (L. nigrescens and A. mexicanus) , belong to the Rio 

 Grande fauna; the other two, (N. calientis and 5. atripinnis), to the 

 fauna of the Rio Lerma. The Rio Sabinas and the Rio Salado flow 

 into the Rio Grande. The fishes taken from these places have all 

 except one, Cycleptus elongatus, been previously taken from the Rio 

 Grande or its tributaries in Mexico. 



Family Lepisosteida*. 



Lepisosteus osseus (Linnaeus). 

 Roderiguez (5). 



