BLASTOCLADIALES 641 



side, along which dehiscence occurs permitting zoospore discharge. Zoo- 

 spores as in C. dodgei. l 



In larvae of the malaria mosquito Anopheles quadrimaculatus, United 

 States. 



"Recognized by its occurrence on An [opheles] quadrimaculatus and 

 by the pitted walls. C[oelomomyces] dodgei, to which it is closest, occurs 

 only on A. crucians and has sporangial walls that are furnished with pits 

 and bands and hence may easily be distinguished from C. punctatus" 

 (Couch and Dodge, op. cit.). 



Coelomomyces keilini Couch and Dodge 

 J. Elisha Mitchell Sci. Soc. 63: 74, pi. 20, rigs. 2-5. 1947 



Hyphae fairly abundant and conspicuous though less so than in C 

 [oelomomyces] quadrangulatus, consisting mostly of rather short subdi- 

 chotomously branched pieces, 5-25 [x, usually 10-12.6 \x thick and 60- 

 170 [x long or sometimes longer, and many smaller irregularly-shaped 

 pieces. Sporangia oval in outline, usually slightly flattened on one side, 

 34_46 by 58-71 u,; wall consisting of three layers, the outer, very thin, 

 hyaline membrane derived from the old plasma membrane and the wall 

 proper which is 3-7 \x thick, the outer part up to 5 \i thick, the inner up 

 to 2 [x. In the thinner-walled sporangia, the outer wall smooth or with 

 minute striae; in the thicker-walled ones, the outer wall pitted, the 

 mouths of the pits slit-like and the pits appearing somewhat star-like as 

 one focuses down; in sectional view spindle-shaped, with parallel striae 

 between the pits. In some of the thick-walled sporangia, the protoplasm 

 having shrunken from the first-formed wall layers at one end and 

 forming an additional wall with the old walls. Sporangia with a preform- 

 ed longitudinal groove. l 



In larvae of Anopheles crucians. United States. 



Coelomomyces africanus Walker 

 Ann. Trop. Med. and Parasitol., 32: 231, pi. 3, tig. 3. 1938 

 Mycelium from 3-8 [j. in diameter, branched; resting spore ellipsoidal. 

 14-18 by 25-35 \x in length, with a crinkled pitted wall. 

 1 Revised for this treatise by J. N. Couch. 



