4G2 



ZOOLOGY. 



ventral fins are usually absent. They are inhabitants of warm- 

 waters. The trunk-fish or box-fish, Lactophrys trig onus 

 Poey, is a West Indian fish ; one specimen has appeared at 

 Holmes' Hole, Mass. The porcupine - fish (Chilichthy 

 turgidus Gill) and smooth puffer (Tetrodon Icevigatus Gill) 

 and the spring box-fish (Chilomycterus geometricus Kaup), 



Fig. 425. Sun-fish, Mola rotunda^ one eighteenth natural size. After Putnam. 



range from Cape Cod to Florida. The sun-fish (Mola ro- 

 tunda Cuvier, Fig. 425) is, like the others of the order, a 

 surface -swimmer. It is sometimes a metre or more in 

 length, weighing five hundred pounds or more. Allied 

 forms are Oiihtiyoriscus oblo/if/i/n (Fig. 426) and the globe* 



